Home  /  Research library  /  Source (Markdown)

Water chlorination (dispensers / in-line)

Intervention ID: int_chlorination
Evidence strength: strong
Causes: cause_safe_water

Mechanism

Chlorine at collection or in-line.

Organizations in this catalog

• org_givewell_all_grants_fund
• org_jpal_chlorine
• org_uduma
• org_evidence_action_ilc
• org_evidence_action
• org_evidence_action_safe_water

Citations (public evaluator pages)

• https://www.givewell.org/research/grants/evidence-action-in-line-chlorination-india-september-2023

Evidence notes

GiveWell has funded Evidence Action Safe Water / in-line chlorination; CE $/life left null in Phase 1 without a Top Charities-style average.

Key uncertainties

• Not a current GiveWell Top Charity; grant-level evidence only in our corpus.
• External validity across water-system types and geographies.

Fungibility notes

Grant-funded incubation/scale; other WASH funders may exist — cite specific grant pages when claiming displacement.

Cost-effectiveness notes (do not treat as verified without citation_urls)

GiveWell funded Evidence Action Safe Water/ILC; $/life null Phase 1.

Agents must look up data/claims_index.json and cite citation_urls before stating numbers.

Provenance

See docs/evaluation-provenance.md and data/graph/evaluations_graph.json.

last_reviewed: 2026-10-01